Background Contamination - Xerox Phaser 3140 Service Manual

Print-Quality Troubleshooting

Background Contamination

Initial Actions
5-14
There is toner contamination on all or most of the page. The contamination
appears as a very light gray dusting. The Print Cartridge is designed to print 2,000
sheets at 5% coverage. If prints typically are below 5% coverage, background
contamination can occur.
• Check the paper transfer path.
• Ensure there is no debris in the transfer path.
Troubleshooting Reference Table
Applicable Parts
Power Supply Board, PL1.0.1
Transfer Roller, PL1.0.8
Print Cartridge, PL1.1.12
Troubleshooting Procedure Table
Step Actions and Questions
1 Check the paper condition.
Is the paper dry, a recommended
type, and loaded in the correct
position?
2 Print out the Supplies Information
Report (page 4-2), and check usage
patterns.
Does the typical print have less than
5% coverage?
3 Check the Print Cartridge. Is the
Print Cartridge at or near end of life?
4
Check the Transfer Roller movement.
Does the Transfer Roller rotate
smoothly?
Example Print
Background Contamination
Yes
Go to step 2.
Go to step 3.
Replace the
Print Cartridge
(page 8-51).
Go to step 5.
Phaser 3140/3155/3160 Printer Service Manual
No
Replace the
paper.
Go to step 4.
Go to step 4.
Clean the
Transfer Roller
bushings.